CVE-2025-45611 is a critical security vulnerability identified in the /user/edit/ component of the hope-boot application version 1.0.0. The vulnerability arises from incorrect access control, allowing an attacker to bypass authentication by sending a specially crafted GET request. This means that an unauthenticated attacker can gain unauthorized access to user edit functionalities without providing valid credentials. The vulnerability is classified under CWE-284, which relates to improper access control mechanisms. The CVSS v3.1 base score of 9.8 indicates a critical severity level, with attack vector being network-based (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction needed (UI:N), and impacts on confidentiality, integrity, and availability all rated high (C:H/I:H/A:H). This implies that exploitation can be performed remotely without any authentication or user interaction, potentially allowing full compromise of user data and system integrity. Although no known exploits are currently reported in the wild, the nature of the vulnerability makes it a high-risk target for attackers once exploit code becomes available. The lack of vendor or product information limits precise identification of the affected ecosystem, but the vulnerability's presence in a web application component suggests it could affect any deployment of hope-boot v1.0.0 where the /user/edit/ endpoint is exposed. The absence of patch links indicates that a fix may not yet be publicly available, increasing the urgency for organizations to implement interim mitigations.

For European organizations, this vulnerability poses a significant risk, especially for entities relying on hope-boot v1.0.0 for user management or other critical web services. Successful exploitation could lead to unauthorized access to user accounts, modification or deletion of user data, and potential lateral movement within the network. This could result in data breaches violating GDPR regulations, leading to legal penalties and reputational damage. The high impact on confidentiality, integrity, and availability means that sensitive personal data and business-critical information could be exposed or altered, disrupting operations. Sectors such as finance, healthcare, government, and critical infrastructure in Europe, which often have stringent compliance requirements and handle sensitive data, would be particularly vulnerable. Additionally, the ease of exploitation without authentication or user interaction increases the likelihood of automated attacks targeting exposed endpoints, potentially leading to widespread compromise if not mitigated promptly.

Given the absence of an official patch, European organizations should immediately implement the following specific mitigations: 1) Restrict access to the /user/edit/ endpoint using network-level controls such as IP whitelisting or VPN-only access to limit exposure to trusted users. 2) Deploy Web Application Firewalls (WAFs) with custom rules to detect and block anomalous GET requests targeting the /user/edit/ path, especially those attempting to bypass authentication. 3) Conduct thorough access control reviews and implement strict authentication and authorization checks at the application layer to ensure that only authenticated and authorized users can access sensitive endpoints. 4) Monitor web server and application logs for unusual access patterns or repeated unauthorized attempts to access /user/edit/. 5) If possible, disable or remove the vulnerable /user/edit/ functionality temporarily until a patch is available. 6) Engage with the hope-boot vendor or community to obtain updates or patches and apply them promptly once released. 7) Educate development and security teams about secure coding practices to prevent similar access control issues in future releases.